351 lines
8.4 KiB
C#
351 lines
8.4 KiB
C#
//
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// System.Runtime.Remoting.Messaging.MethodDictionary.cs
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//
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// Author: Lluis Sanchez Gual (lluis@ideary.com)
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//
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// 2003 (C) Lluis Sanchez Gual
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//
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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namespace System.Runtime.Remoting.Messaging
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{
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[Serializable]
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internal class MessageDictionary : IDictionary
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{
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IDictionary _internalProperties = null;
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protected IMethodMessage _message;
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string[] _methodKeys;
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bool _ownProperties = false;
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public MessageDictionary (IMethodMessage message)
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{
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_message = message;
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}
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internal bool HasUserData ()
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{
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if (null != _internalProperties)
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{
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// MethodCallMessageWrapper uses a nested MessageDictionary
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if (_internalProperties is MessageDictionary)
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return ((MessageDictionary)_internalProperties).HasUserData ();
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else
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return _internalProperties.Count > 0;
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}
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return false;
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}
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internal IDictionary InternalDictionary
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{
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get
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{
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if (null != _internalProperties)
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{
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if (_internalProperties is MessageDictionary)
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return ((MessageDictionary)_internalProperties).InternalDictionary;
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}
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return _internalProperties;
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}
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}
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public string[] MethodKeys
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{
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get { return _methodKeys; }
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set { _methodKeys = value; }
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}
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protected virtual IDictionary AllocInternalProperties()
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{
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_ownProperties = true;
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return new Hashtable();
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}
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public IDictionary GetInternalProperties()
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{
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if (_internalProperties == null) _internalProperties = AllocInternalProperties();
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return _internalProperties;
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}
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private bool IsOverridenKey (string key)
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{
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// Small optimization. If the internal properties have been
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// created by this dictionary, then it can be assured that it does
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// not contain values for overriden keys.
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if (_ownProperties) return false;
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foreach (string mkey in _methodKeys)
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if (key == mkey) return true;
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return false;
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}
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public MessageDictionary(string[] keys)
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{
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_methodKeys = keys;
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}
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public bool IsFixedSize
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{
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get { return false; }
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}
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public bool IsReadOnly
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{
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get { return false; }
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}
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public object this[object key]
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{
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get
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{
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string keyStr = (string)key;
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for (int n=0; n<_methodKeys.Length; n++)
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if (_methodKeys[n] == keyStr) return GetMethodProperty (keyStr);
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if (_internalProperties != null)
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return _internalProperties[key];
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else
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return null;
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}
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set
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{
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Add (key, value);
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}
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}
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protected virtual object GetMethodProperty (string key)
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{
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switch (key)
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{
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case "__Uri" : return _message.Uri;
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case "__MethodName" : return _message.MethodName;
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case "__TypeName" : return _message.TypeName;
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case "__MethodSignature" : return _message.MethodSignature;
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case "__CallContext" : return _message.LogicalCallContext;
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case "__Args" : return _message.Args;
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case "__OutArgs": return ((IMethodReturnMessage)_message).OutArgs;
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case "__Return": return ((IMethodReturnMessage)_message).ReturnValue;
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default : return null;
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}
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}
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protected virtual void SetMethodProperty (string key, object value)
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{
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switch (key)
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{
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case "__CallContext": // Ignore?
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case "__OutArgs":
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case "__Return": return;
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case "__MethodName" :
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case "__TypeName" :
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case "__MethodSignature" :
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case "__Args" : return; //throw new ArgumentException ("key was invalid " + key);
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case "__Uri": ((IInternalMessage)_message).Uri = (string) value; return;
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}
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}
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public ICollection Keys
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{
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get
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{
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ArrayList keys = new ArrayList();
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for (int n=0; n<_methodKeys.Length; n++)
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keys.Add (_methodKeys[n]);
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if (_internalProperties != null)
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{
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foreach (string key in _internalProperties.Keys)
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if (!IsOverridenKey (key)) keys.Add (key);
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}
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return keys;
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}
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}
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public ICollection Values
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{
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get
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{
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ArrayList values = new ArrayList();
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for (int n=0; n<_methodKeys.Length; n++)
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values.Add (GetMethodProperty(_methodKeys[n]));
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if (_internalProperties != null)
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{
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foreach (DictionaryEntry entry in _internalProperties)
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if (!IsOverridenKey((string)entry.Key)) values.Add (entry.Value);
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}
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return values;
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}
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}
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public void Add (object key, object value)
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{
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string keyStr = (string)key;
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for (int n=0; n<_methodKeys.Length; n++)
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if (_methodKeys[n] == keyStr) {
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SetMethodProperty (keyStr, value);
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return;
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}
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if (_internalProperties == null) _internalProperties = AllocInternalProperties();
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_internalProperties[key] = value;
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}
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public void Clear ()
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{
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if (_internalProperties != null) _internalProperties.Clear();
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}
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public bool Contains (object key)
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{
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string keyStr = (string)key;
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for (int n=0; n<_methodKeys.Length; n++)
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if (_methodKeys[n] == keyStr) return true;
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if (_internalProperties != null) return _internalProperties.Contains (key);
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else return false;
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}
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public void Remove (object key)
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{
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string keyStr = (string)key;
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for (int n=0; n<_methodKeys.Length; n++)
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if (_methodKeys[n] == keyStr) throw new ArgumentException ("key was invalid");
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if (_internalProperties != null) _internalProperties.Remove (key);
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}
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public int Count
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{
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get
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{
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if (_internalProperties != null) return _internalProperties.Count + _methodKeys.Length;
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else return _methodKeys.Length;
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}
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}
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public bool IsSynchronized
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{
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get { return false; }
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}
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public object SyncRoot
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{
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get { return this; }
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}
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public void CopyTo (Array array, int index)
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{
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Values.CopyTo (array, index);
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return new DictionaryEnumerator (this);
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}
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public IDictionaryEnumerator GetEnumerator ()
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{
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return new DictionaryEnumerator (this);
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}
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// Dictionary enumerator
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class DictionaryEnumerator : IDictionaryEnumerator
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{
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MessageDictionary _methodDictionary;
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IDictionaryEnumerator _hashtableEnum;
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int _posMethod;
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public DictionaryEnumerator (MessageDictionary methodDictionary)
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{
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_methodDictionary = methodDictionary;
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_hashtableEnum = (_methodDictionary._internalProperties != null) ? _methodDictionary._internalProperties.GetEnumerator() : null;
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_posMethod = -1;
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}
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public object Current
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{
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get {return Entry; }
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}
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public bool MoveNext()
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{
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if (_posMethod != -2)
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{
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_posMethod++;
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if (_posMethod < _methodDictionary._methodKeys.Length) return true;
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_posMethod = -2;
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}
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if (_hashtableEnum == null) return false;
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while (_hashtableEnum.MoveNext())
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{
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if (!_methodDictionary.IsOverridenKey((string)_hashtableEnum.Key))
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return true;
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}
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return false;
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}
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public void Reset()
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{
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_posMethod = -1;
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_hashtableEnum.Reset();
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}
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public DictionaryEntry Entry
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{
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get
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{
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if (_posMethod >= 0)
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return new DictionaryEntry (_methodDictionary._methodKeys[_posMethod], _methodDictionary.GetMethodProperty(_methodDictionary._methodKeys[_posMethod]));
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else if (_posMethod == -1 || _hashtableEnum == null)
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throw new InvalidOperationException ("The enumerator is positioned before the first element of the collection or after the last element");
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else
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return _hashtableEnum.Entry;
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}
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}
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public object Key
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{
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get { return Entry.Key; }
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}
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public object Value
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{
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get { return Entry.Value; }
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}
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}
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}
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}
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